From: Jens Axboe <axboe@xxxxxxxxx>
No upstream commit exists for this patch.
It's not necessarily safe to check the task_list locklessly, remove
this micro optimization and always grab task_lock before deeming it
empty.
Reported-and-tested-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/io_uring.c | 3 ---
1 file changed, 3 deletions(-)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3738,9 +3738,6 @@ static void io_cancel_async_work(struct
{
struct io_kiocb *req;
- if (list_empty(&ctx->task_list))
- return;
-
spin_lock_irq(&ctx->task_lock);
list_for_each_entry(req, &ctx->task_list, task_list) {
